Hey Anyone,
Im having issues with my Arduino IDE uploading to my Redboard and displaying the words at times or correctly at all. Here is the code I used off SparkFun’s website. I have two Alphanumeric displays hooked together. What could be going on?
#include <Wire.h>
#include <SparkFun_Alphanumeric_Display.h> //Click here to get the library: http://librarymanager/All#SparkFun_Qwii … ic_Display by SparkFun
HT16K33 display;
void setup() {
Serial.begin(115200);
Serial.println(“SparkFun Qwiic Alphanumeric - Example 8: Multi Display”);
Wire.begin(); //Join I2C bus
//check if displays will acknowledge
//The first address in the begin() function should be the left-most display, traveling to the right from there
//This is how the string will print across displays, reading from left to right.
if (display.begin(0x70, 0x71) == false)
{
Serial.println(“Device did not acknowledge! Freezing.”);
while(1);
}
Serial.println(“Displays acknowledged.”);
display.print(“WHAT UP”);
}
void loop()
{
}